• A definition/description of the source (one –two sentences)

Landfill leachates are liquids that flow out of landfills and can pollute the area around the landfill.
  • The actual pollutants associated with the source (list)

  • High concentration of ammonia
  • Toxic substances
  • Methane
  • Toxin accumulation
  • Sewage fungus
  • clogging in rivers
  • Potential impacts/dangers of the pollutants (list)


- high organic contaminant concentrations and high concentration of ammonia
- Leachate streams running directly into the aquatic environment have both an acute and chronic impact on the environment which may be very severe and can severely diminish bio-diversity and greatly reduce populations of sensitive species.
- Rivers impacted by leachate are often yellow in appearance and often support severe overgrowths of sewage fungus.
- Leachate collection systems can experience many problems including clogging with mud or silt.
- Chemical reactions in the leachate may also cause clogging through generation of solid residues. The chemical composition of leachate can weaken pipes walls which may fail.